Embedded Patents (Class 152/197)
  • Patent number: 10259265
    Abstract: An airless tire has a cylindrical tread ring 2 having a ground-contacting surface 21, a hub disposed on the radially inside of the tread ring 2 and fixed to an wheel shaft, and spokes connecting between the tread ring 2 and the hub. The tread ring 2 has a side wall 22 continued from the ground-contacting surface 21 and forming a ring side surface. The side wall 22 has a supporting portion 23 which, when the tread ring 2 alone is horizontally laid on a horizontal surface H, contacts with a horizontal surface H and supports the tread ring 2 so that a ring axis A2 is oriented in a direction perpendicular to the horizontal surface H.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: April 16, 2019
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Wako Iwamura, Makoto Sugiya
  • Patent number: 10227464
    Abstract: Provided is a fiber-reinforced plastic shaped product constituted by a fiber-reinforced resin material including reinforcing fibers and a thermoplastic resin, characterized in that the reinforcing fibers include short fibers and include reinforcing fibers which have been arranged in a wavy arrangement in the thickness direction. This fiber-reinforced plastic shaped product hence has improved thickness-direction mechanical strength while retaining intact in-plane-direction mechanical strength.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: March 12, 2019
    Assignee: Teijin Limited
    Inventor: Toshifumi Saji
  • Patent number: 9004121
    Abstract: Tire including a continuous pressure membrane. The tire includes a carcass, a rubber layer surrounding the carcass, and a belt. The carcass includes at least one continuous pressure membrane defining a generally U-shaped cross section. The pressure membrane includes a crown portion, a first sidewall portion, and a second sidewall portion connected with the first sidewall portion by the crown portion. The belt may be composed of at least one additional continuous pressure membrane adjacent the crown portion.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: April 14, 2015
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Anthony John Scarpitti, Gary Robert Burg
  • Patent number: 8215351
    Abstract: An improved shear band for use in non-pneumatic tires, pneumatic tires, and other technologies is provided. The shear band is constructed as a composite of layers that are combined in a specific manner. Each layer is constructed from one or more materials having certain selected physical properties. The layers are combined a specific manner to create a composite having physical properties and performance characteristics desirably outperforming that of the individual materials forming the layers. When used in tire construction, improvements in rolling resistance can also be obtained.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: July 10, 2012
    Assignee: Michelin Recherche et Technique
    Inventor: Ronald Hobart Thompson
  • Patent number: 7950429
    Abstract: A tire for vehicles which does not require pressurization by means of a pressurized fluid has a tread, two sidewalls, and two beads which are attached to a wheel rim made of elastomer material, and is provided with at least one tubular reinforcement body which is associated with the tread; each of the sidewalls having a respective homogeneous resilient annular membrane, a straight generatrix of which forms an angle (A) other than 90° with the axis of the tire; the membranes being stretched radially between the tread and the beads such as to be pre-tensioned in the absence of external loads acting on the tire.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: May 31, 2011
    Assignee: Fiat Auto S.p.A.
    Inventors: Stefano Re Fiorentin, Mario Palazzetti, Giovanni Monfrino
  • Patent number: 7677284
    Abstract: A pneumatic tire including a tread portion, a pair of sidewall portions, a pair of bead portions, and a carcass extending between the bead portions through the tread portion and sidewall portions, wherein the tread portion is provided radially inside the carcass with a tread tape having a thickness of not more than 2.0 mm and having a tensile elastic modulus larger than any rubber existing between the tread tape and the adjacent carcass cords. A method of manufacturing the pneumatic tire includes vulcanizing a main body of the tire, excepting the tread tape, and attaching the tread tape onto the inside of the vulcanized tire main body.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: March 16, 2010
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Hirotsugu Hasegawa, Naoki Yukawa
  • Patent number: 7506675
    Abstract: A composite sheet has confined flexibility and is used in a safety pneumatic tire which is self-supporting under zero inflation pressure. The composite sheet comprises a matrix of high modulus solid objects, low modulus material, and optionally a matrix of cords, the high modulus solid objects being assembled to form a mechanism which allows the composite sheet to bend easily within predetermined ranges and confines the composite sheet from further bending when the limits of the predetermined ranges are reached. The safety pneumatic tire comprises a pair of the composite sheets disposed at sidewall regions under a carcass and/or a layer of the composite sheet disposed above a belt package. A method of making the composite sheet includes forming a chain of the high modulus solid objects having a desired locking position.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: March 24, 2009
    Inventors: Lifeng Su, Qi Gao
  • Publication number: 20090032156
    Abstract: A puncture resistant pneumatic tire has a tread portion and a pair of lateral tread edges. A belt package is located radially inward of the tread portion and a carcass structure has at least one body ply which extends between and is turned up around a pair of bead cores. A protective band extends circumferentially about the tire radially beneath the tread portion and includes a plurality of circumferentially spaced metal rods, each of which extends in a lateral direction between the tread edges. The protective band may be located radially inward or outward of a spiral ply layer and the rods may be arranged in a staggered laterally offset layered relationship. The rods have a circular cross-section with a diameter of between 1/16 inch and ¼ inch and a length of between 7 inches and 8 inches and will deflect and dislodge the pointed end of road debris before it completely punctures the tire.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 5, 2009
    Inventor: David R. Stewart
  • Patent number: 7448425
    Abstract: A tire tread comprising a rubber composition based on at least: (i) a diene elastomer; (ii) more than 50 phr of a reinforcing inorganic filler; (iii) between 2 and 15 phr of a coupling agent; (iv) an unsaturated metal carboxylic acid salt. This tread has, after mechanical running-in of the tire comprising it, a rigidity gradient which increases radially from the surface towards the inside of the tread, imparting to the tire an improved compromise of grip/behavior properties. Use of such a tread for the manufacturing or recapping of tires. Tires comprising such a tread.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: November 11, 2008
    Assignee: Michelin Recherche et Technique S.A.
    Inventor: Didier Vasseur
  • Patent number: 7416002
    Abstract: A pneumatic tire has a pair of shoulder portions extending between a tread portion and opposed sidewall portions. The tire has at least one ply of a composite fabric. The composite fabric has three layers with the middle layer comprising a plurality of straight warp yarns wherein the three layers are bound together with binder yarns. At a minimum, the composite fabric ply is located in the tire shoulders.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: August 26, 2008
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Jenny Zhaoxia Yu, David Mark Frantz, Leonard James Reiter, Robert Anthony Neubauer
  • Patent number: 7281553
    Abstract: A pneumatic radial ply tire incorporating a crown reinforcing structure comprises at least one reinforcing hoop located approximately on the equatorial plane and disposed radially inward of the tread and radially outward of the carcass structure. The hoop is surrounded or encased by a layer of elastomeric transition material providing a flexible structural connection between the hoop and the adjacent carcass structure and belt structure. The hoop may have a substantially lenticular shape, or a complex shape with two thickened sections or lobes connected by a thin waist-like section, or a shape and a location that is asymmetric with respect to the equatorial plane of the tire, and may be made by winding a thin strip of material such as UHMWPE in an elastomeric matrix. The hoop may replace the belt structure of the tire.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: October 16, 2007
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Alain Emile Francois Roesgen, Laurent Colantonio, Filomeno Gennaro Corvasce
  • Patent number: 6994134
    Abstract: The invention comprises an improved non-pneumatic tire, and particularly a shear layer for a non-pneumatic tire wherein the shear layer comprises an elastomeric composition that includes a metal salt of a carboxylic acid. The shear layer preferably comprises a dienic elastomeric composition that includes a metal salt of a carboxylic acid. In one embodiment of the invention, the metal salt of the carboxylic acid is zinc diacrylate or zinc dimethacrylate. In one embodiment of the invention, the metal salt of the carboxylic acid is zinc diacrylate or zinc dimethacrylate, and a peroxide curative agent is employed.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: February 7, 2006
    Assignee: Michelin Recherche et Technique S.A.
    Inventor: Michael D. Grah
  • Patent number: 6983776
    Abstract: A resilient tire that supports a load without internal air pressure includes a ground contacting tread portion and sidewall portions extending radially inward from said tread portion and anchored in bead portions. A bias ply carcass extends between the beads to support the sidewalls. A reinforced annular band is disposed radially inward of the tread portion. The band comprises an elastomeric shear layer at a radially outer side of the bias ply carcass and a membrane adhered to a radially outward side of the elastomeric shear layer. Each of the bias ply and membrane has a longitudinal tensile modulus sufficiently greater than the shear modulus of the shear layer so that when under load the ground contacting portion of the tire deforms to a flat contact region through shear strain in the shear layer while maintaining constant the length of the membranes.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: January 10, 2006
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Ronald Hobart Thompson, Timothy B. Rhyne, Kenneth W. Demino, Steven M. Cron
  • Patent number: 6938657
    Abstract: A tire for a vehicle wheel, capable of withstanding the load at low pressure or zero pressure, includes a carcass, a crown, two axially opposed sidewalls, two bead cores, two compression-resistant annular reinforcing elements, and, optionally, a belt structure. The annular reinforcing elements are made of material having high rigidity and very low elastic hysteresis. Each annular reinforcing element is in or adjacent to a zone joining the crown to a sidewall and in a first plane parallel to an equatorial plane of the tire. Each bead core is in a second plane parallel to the equatorial plane. The distance between the first planes is greater than or equal to the distance between the second planes. A camber of an arc between a bead core and an intersection of a carcass ply line with a cylindrical surface passing through the reinforcing elements does not exceed 15% of the arc length.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: September 6, 2005
    Assignee: Pirelli Pneumatici S.p.A.
    Inventors: Gian Carlo Cucco, Piero Misani, Alessandro Volpi, Guido Riva
  • Patent number: 6883568
    Abstract: A tire comprising two beads, a crown and sidewalls that connect the crown to said beads, the tire being reinforced by a carcass reinforcement anchored in each bead to at least one annular anchoring element, each sidewall comprising an additional, inextensible sidewall ring located axially inside the axially outermost carcass ply and a coupling section located radially between the annular anchoring element in the bead and said sidewall ring and positioned axially inside the axially outermost carcass ply. The tire is characterized in that the line segments passing through the centers of gravity of the sections of the annular anchoring rings in the beads and through the center of gravity of the sidewall rings on the same respective side, make angles respectively of ?1 and ?2 relative to the rotation axis, these angles being different.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: April 26, 2005
    Assignee: Michelin Recherche et Technique S.A.
    Inventor: Oliver Muhlhoff
  • Patent number: 6834694
    Abstract: Tire comprising a carcass reinforcement of at least one ply of reinforcing elements parallel to one another within each ply and making with the circumferential direction an angle &agr; such that 60°<&agr;<90°, said ply being anchored in each bead to an anchoring element in the bead and each bead being connected radially to a tread by a sidewall comprising an inextensible reinforcement ring and a profiled element of rubber mixture located axially inside said ply and located radially between said anchoring element and said sidewall ring.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: December 28, 2004
    Assignee: Michelin Recherche et Technique S.A.
    Inventor: Olivier Muhlhoff
  • Patent number: 6827114
    Abstract: A method of manufacturing a pneumatic tire comprises making a rubber-coated cord-member by coating one or more cords with rubber, and making the tread reinforcement by putting together a plurality of the cord-members around a drum into a cylindrical network of the cords, so that the cords make a first array of cords inclining in one direction with respect to the tire equator and a second array of cords inclining in one direction which is opposite to the cords of the first array with respect to the tire equator. It is possible that the cord-members are woven. It is also possible that the cord-members are not woven and, in the crossings of the cords, one of the two cross cords is curved along the other cord.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: December 7, 2004
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Masahiro Oku
  • Publication number: 20040159385
    Abstract: A structurally supported tire includes a ground contacting tread portion, a reinforced annular band disposed radially inward of the tread portion, and a plurality of web spokes extending transversely across and radially inward from the reinforced annular band and anchored in a wheel or hub. The reinforced annular band comprises an elastomeric shear layer, at least a first membrane adhered to the radially inward extent of the elastomeric shear layer and at least a second membrane adhered to the radially outward extent of the elastomeric shear layer.
    Type: Application
    Filed: February 20, 2004
    Publication date: August 19, 2004
    Inventors: Timothy B. Rhyne, Ronald H. Thompson, Steven M. Cron, Kenneth W. DeMino
  • Patent number: 6769465
    Abstract: A resilient tire that supports a load without internal air pressure includes a ground contacting tread portion and sidewall portions extending radially inward from said tread portion and anchored in bead portions adapted to remain secure to a wheel during rolling of the tire. A reinforced annular band is disposed radially inward of the tread portion. The band comprises an elastomeric shear layer, at least a first membrane adhered to the radially inward extent of the elastomeric shear layer and at least a second membrane adhered to the radially outward extent of the elastomeric shear layer. Each of said membranes has a longitudinal tensile modulus sufficiently greater than the shear modulus of said shear layer so that when under load the ground contacting portion of the tire deforms to a flat contact region through shear strain in the shear layer while maintaining constant the length of the membranes.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: August 3, 2004
    Assignee: Michelin Recherche et Technique, S.A.
    Inventors: Timothy B. Rhyne, Kenneth W. DeMino, Steven M. Cron
  • Publication number: 20040103968
    Abstract: Radial tire comprising a crown, two beads extended by sidewalls comprising a radial carcass reinforcement, the said carcass reinforcement extending into the crown and anchored in each bead to at least one element that is inextensible in the circumferential direction, the said tire comprising in at least one sidewall a supplementary reinforcement formed of rubber with reinforcing elements inclined relative to the circumferential direction and being characterized in that, when viewed in meridian cross-section:
    Type: Application
    Filed: November 25, 2003
    Publication date: June 3, 2004
    Applicant: Michelin Recherche Et Technique S.A.
    Inventor: Laurence Burlacot
  • Patent number: 6730393
    Abstract: A polymeric sheet having excellent cut-resistance contains: (A) a polymeric material, and (B) a hard filler distributed in the polymeric material, the hard filler having a Mohs hardness value of at least about 3.0, the hard filler being in the form of particles having an average diameter sufficient to provide cut-resistance properties to the polymeric material but which is no more than about 5 microns. The cut-resistant sheet may be in the form of a conventional sheet, a film, a coating, a composite and the like, and may be used to form cut-resistance articles such as, e.g., protective garments and tires. The cut-resistant sheet may also be laminated onto a textile fabric to form a composite from which articles, e.g., garments, can be formed.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: May 4, 2004
    Assignee: Honeywell International, Inc.
    Inventors: Ehteridge Odell Oakley, Gregory J. Johnson, Herman Leslie Lanieve
  • Patent number: 6598634
    Abstract: A laminate contains a composite, comprising a high melting point thermoplastic such as polyphenylene or epoxy and high modulus fibers such as carbon or graphite, which is encapsulated with a resin. A primer adheres the encapsulated composite to a rubber material such as a tire tread. Alternatively, an undertread layer adheres the tire tread to the primed encapsulated composite. The laminate can be used as a run flat belt in a tire.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: July 29, 2003
    Assignee: Bridgestone Corporation
    Inventors: Russell W. Koch, Charles D. Spragg, Edward G. Markow, James M. Kirby
  • Publication number: 20030121581
    Abstract: A resilient tire that supports a load without internal air pressure includes a ground contacting tread portion and sidewall portions extending radially inward from said tread portion and anchored in bead portions adapted to remain secure to a wheel during rolling of the tire. A bias ply carcass extends between the beads to support the sidewalls. A reinforced annular band is disposed radially inward of the tread portion. The band comprises an elastomeric shear layer at a radially outer side of the bias ply carcass and a membrane adhered to a radially outward side of the elastomeric shear layer. Each of the bias ply and membrane has a longitudinal tensile modulus sufficiently greater than the shear modulus of the shear layer so that when under load the ground contacting portion of the tire deforms to a flat contact region through shear strain in the shear layer while maintaining constant the length of the membranes.
    Type: Application
    Filed: December 13, 2002
    Publication date: July 3, 2003
    Inventors: Ronald Hobart Thompson, Timothy B. Rhyne, Kenneth W. Demino, Steven M. Cron
  • Publication number: 20020166624
    Abstract: A method of manufacturing a security item comprises extruding or casting a polymer plastics substrate and, during the forming process, introducing a security thread into the substrate. The security thread is embedded to different depths in the substrate so as to generate a windowed effect.
    Type: Application
    Filed: May 8, 2002
    Publication date: November 14, 2002
    Applicant: DE LA RUE INTERNATIONAL LIMITED
    Inventors: Karen Cunningham, Jonathan Brian Marx
  • Patent number: 6439288
    Abstract: A run flat pneumatic tire has a thin annular band embedded in the crown portion of the tire. The band is formed of a multilayer composite formed of wound layers of a material such as fiberglass and/or graphite impregnated with a resin. The band has a radial cross-sectional thickness with a neutral axis extending through the center in an axial direction. The radial thickness of the band decreases from an axial midpoint toward outer ends of the band to provide greater thickness in the center of the band to reduce interlaminar shear fatigue.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: August 27, 2002
    Assignee: Bridgestone/Firestone North American Tire, LLC
    Inventors: Charles D. Spragg, Stephen M. Vossberg, James M. Kirby, Edward G. Markow
  • Patent number: 6405773
    Abstract: A pneumatic tire is reinforced by a thin annular composite band embedded in the crown portion of the tire to enable the tire to resist compressive forces in the tire when in an uninflated condition. The band is formed of a plurality of wound layers of first and second resin coated fiber tows wherein the first tow is formed of fibers twisted at a greater angle than the fibers in the second tow. Layers of the first tow are located adjacent the neutral axis of the band to provide interlaminar shear strength with the tow layers located adjacent the inner and outer surfaces of the band being formed predominately of the second tow to provide a high level circumferential stiffness. The intermediate tow layers are formed of both type of tows to provide a transition zone between the central interlaminar shear strength and the outer circumferential stiffness.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: June 18, 2002
    Assignee: Bridgestone/Firestone North American Tire, LLC
    Inventors: Stephen M. Vossberg, Charles D. Spragg, Edward G. Markow
  • Patent number: 6363983
    Abstract: The invention herein relates to an improved tire structure comprised of a plurality of thin steel plates crisscrossingly arranged in the thick portion of a tire surface and an assembly of cover tire installed around the surface of said tire; the plurality of up and down crisscrossingly arranged thin steel plates form a shield along the circumference of tire that removes the worry of the tire being punctured by sharp objects on the roads when the vehicle travels, thus enhancing driving safety; the cover tire can be replaced after it is worn out without the need to change the whole tire, thus effectively reducing the consumption of rubber for tire production that makes the invention herein both economical and environmentally friendly.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: April 2, 2002
    Inventor: Yu-Fu Chen
  • Patent number: 6260593
    Abstract: A pneumatic race tire has an elastomeric casing with a tread in the crown portion thereof, a pair of bead areas and a body ply carcass extending continuously between the bead areas and through the sidewalls and crown portion. A continuous thin annular band formed of a high strength, lightweight material such as metal, fiberglass, a composite material or the like is located radially inwardly of the tread and between the tread and body ply carcass to enhance tire performance by reducing the thickness of the tread area.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: July 17, 2001
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Charles D. Spragg, Gregory D. Chaplin, Dale R. Harrigle, Jr., James M. Kirby
  • Patent number: 6167931
    Abstract: An improved inflation-free tire structure for use on light duty vehicles, such as mowers and wheel chairs, has a crude tire, a pair of wheel discs and a bearing. The crude tire is provided with multiple radial plies that are extended over and wound around the wire beads disposed on inner parallel peripheral rims of a tire and further led to the middle or bottom portion of the rubber side walls of a tire so that the strength of the tire is reinforced. Each wheel disc provided with a flanged rim has a central through hole with four holes disposed on the periphery thereof so as to permit the bearing to be guided through the two wheel discs and fixed in place. The tire has a central hole with which a wheel disc is in snap engagement. The diameter of the rim of the central hole of the tire is smaller than the diameter of the flanged rim of a wheel disc so that the tire can be sealedly engaged with each wheel disc in assembly.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: January 2, 2001
    Assignee: Kings Glory Co., Ltd.
    Inventor: Chai-I Hsiao
  • Patent number: 6148885
    Abstract: A band element for mounting in the crown portion of a pneumatic tire to provide run flat ability to the tire in the event of loss of air pressure and to provide increased puncture resistance is formed of flat strips of tape having fibers embedded in a resin matrix which in one embodiment are twisted and then pultruded to provide a rectangular cross sectional configuration. The twisted tape is wrapped about a mandrel and forms either the only layer, or the intermediate layer of a composite band in combination with inner and outer layers of flat tape or wound filament fibers, whereby the fibers in the tape extend across the central axis of the band to reduce interlaminar sheer. In another embodiment, a plurality of dimples or depressions are formed in the individual tape layers to extend a plurality of the fibers across the layer boundaries to reduce interlaminar sheer.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: November 21, 2000
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Charles D. Spragg, James M. Kirby, Edward G. Markow
  • Patent number: 6112791
    Abstract: A run flat pneumatic tire has a thin annular band embedded in a crown portion of the tire. The band preferably is a composite member formed of a plurality of layers elongated strip material providing the band with inner and outer annular axially extending surfaces terminating in a pair of outer end portions. Either one or both of the outer end portions are tapered toward the other end portion and toward a pair of end edges to reduce interlaminar shear. The end edges can be straight or rounded surfaces and the tapered outer end portions may be coated with fiber filled epoxy coating.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: September 5, 2000
    Assignee: Bridgestone/Firestone Research, Inc.
    Inventors: Charles D. Spragg, James M. Kirby, Edward G. Markow
  • Patent number: 6029725
    Abstract: The present invention is an improved tire design including a continuous annular band or a belt formed of a plurality of relatively flat rigid plates embedded in the rubber between the tread and body plies. The plates are curved to conform to the radius of the tire and are pivotally linked or otherwise pivotally connected together thereby creating a flexible annular belt that is extremely stiff in the in-plane or steering torsional direction due to the engagement of the side edges of the adjacent plates when experiencing an in-plane or steering torsional force but flexible in the radial direction due to the pivotal connection between the adjacent plates.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: February 29, 2000
    Assignee: Bridgestone/Firestone, Inc.
    Inventor: Neel K. Mani
  • Patent number: 6012498
    Abstract: Composites of high melting point thermoplastics such as polyphenylene sulfide or polyimide and high modulus fibers such as carbon, graphite, or boron can be bonded to rubber using a primer such as a metal primer. The composite desirably has a modulus of elasticity of at least 750,000 psi and can be used as a belt in a no-flat tire.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: January 11, 2000
    Assignee: Bridgestone Corporation
    Inventor: Russell W. Koch
  • Patent number: 5817197
    Abstract: The present invention is an improved tire design including a continuous annular band or a belt formed of a plurality of relatively flat rigid plates embedded in the rubber between the tread and body plies. The plates are curved to conform to the radius of the tire and are pivotally linked or otherwise pivotally connected together thereby creating a flexible annular belt that is extremely stiff in the in-plane or steering torsional direction due to the engagement of the side edges of the adjacent plates when experiencing an in-plane or steering torsional force but flexible in the radial direction due to the pivotal connection between the adjacent plates.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: October 6, 1998
    Assignee: Bridgestone/Firestone, Inc.
    Inventor: Neel K. Mani
  • Patent number: 5597426
    Abstract: The tires for vehicles possess under their tread a belt which extends in the circumferential direction. At least one, preferentially two, layers contain, as strengthening and stabilizing means, foils or sheets with direction-dependent rigidity, which possesses its highest value in a preferred direction. The foils or sheets are so arranged that the preferred direction is oblique to the circumferential direction. Preferentially, the direction-dependent rigidity is realized with a waving or crimping. Through this alignment, which is arranged oblique to the tire circumference, the stabilizing effect of the waving is seen in both the longitudinal as well as the oblique directions. Thus, in comparison with the usual belted tires, less material is needed in tire production, and these tires are both light, but nevertheless possess good driving characteristics and superb rolling resistance.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: January 28, 1997
    Inventor: Dieter Ludwig
  • Patent number: 5556488
    Abstract: The invention relates to a tire formed of a plurality of independent pneuic sectors (S) intended to be mounted on a single rim (J) but removable individually from said rim (J), they being inflatable individually or together. The sectors (S) include at least one reinforcing armoring (4) anchored on at least one circumferential bead wire (10) in each circumferential bead, which is the bead mounted on the wheel rim (J), the reinforcing armoring (4) being radially adjacent to a reinforcement armoring (8) of the tread (2). The circumferential bead wires (10) are connected to meridian bead wires (11) located in the sidewalls (50) of the circumferentially adjacent sectors (S).
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: September 17, 1996
    Assignee: Compagnie G en erale des Etablissements Michelin - Michelin & Cie
    Inventors: Jean Gergele, Armand Le Gall, Jean-Pierre Pompier, Michel Remond
  • Patent number: 5303756
    Abstract: A belted tire including carcass, which is formed by a plurality of body plies, and tread rubber vulcanized to the plies. A plurality of circumferentially spaced apart wear indicating members are secured to the tire carcass, preferably between two plies, but optionally to any single ply. The wear indicating members extend radially outward from the carcass to a desired wear-indicating position, which may be beyond the base of adjacent tire grooves or at other radial levels. The wear indicating member includes a housing assembly containing a visually distinctive material which is visually perceptible from the color of the tire tread. The housing assembly thermally insulates the visually distinctive material sufficiently during vulcanization of the tire to prevent thermal degradation of the wear-indicating material. Optionally, the housings can be solid metallic pins which also provide a shiny visually perceptible wear-indicating material.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: April 19, 1994
    Inventor: James L. Hill
  • Patent number: 4318434
    Abstract: Passive, self-energizing means for increasing the load carrying capabilities in the depressurized condition of a banded radial run-flat tire system. In this invention, an inner tube inflated to a pressure of about 3-5 psi is positioned on the wheel rim inside the tire which is inflated to its normal pressure of about 30 psi. Because of this pressure differential, the inner tube is compressed to about one-sixth its volume at ambient pressure and in normal operation it rides out of contact with the inside walls of the tire casing without interaction therewith. If the tire is depressurized because of a puncture or other cause, the release of tire pressure on the inner tube results in the expansion of the tube outwards to maintain the curvature in the sidewalls, which curvature enhances the load capacity of the tire in the depressurized condition.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: March 9, 1982
    Assignee: Grumman Aerospace Corporation
    Inventor: Edward G. Markow